[rocky] Can't find kernel build dependencies

I'm trying to install the kernel source to chase down a network problem. (Use the source, Luke! I want to read through the SLAAC code to understand why my IPv6 token isn't getting used.) So I downloaded the source RPM and used yum-builddep to try to install anything necessary to do an "rpmbuild -bp kernel.spec". (That should unpack the source RPM and apply all the patches but not do any actual building.) I'm finding a few packages missing:

dwarves libbabeltrace-devel libbpf-devel

I don't see them here for direct download, either:

https://download.rockylinux.org/pub/rocky/8/BaseOS/x86_64/os/Packages/d/ https://download.rockylinux.org/pub/rocky/8/BaseOS/x86_64/os/Packages/l/

Help!